How should disconnect / reconnect be handled?

[erwin]

When I power off the hub that my deckmaster is connected to, deckmaster will crash. Not every crash results in the same error though.

When keeping the hub off for a long time, I got this SERV:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x60 pc=0x57d967]

goroutine 1 [running]:
github.com/karalabe/hid.(*Device).SendFeatureReport(0x0, {0xc0005082a0, 0x20, 0x20})
        /home/erwin/go/pkg/mod/github.com/karalabe/hid@v1.0.1-0.20190806082151-9c14560f9ee8/hid_enabled.go:211 +0x47
github.com/muesli/streamdeck.Device.sendFeatureReport(...)
        /home/erwin/go/pkg/mod/github.com/muesli/streamdeck@v0.3.0/streamdeck.go:475
github.com/muesli/streamdeck.Device.Reset({{0xc00002a240, 0xc}, {0xc00002a2e0, 0xc}, 0x5, 0x3, 0xf, 0x48, 0x7c, 0x10, ...})
        /home/erwin/go/pkg/mod/github.com/muesli/streamdeck@v0.3.0/streamdeck.go:233 +0x92
main.closeDevice(0xc0000b0b60)
        /home/erwin/SourceInstall/deckmaster/main.go:172 +0x98
main.run()
        /home/erwin/SourceInstall/deckmaster/main.go:285 +0x642
main.main()
        /home/erwin/SourceInstall/deckmaster/main.go:308 +0x1a5

Yet when turning off more quickly I got:

Unable to reset Stream Deck
error: cannot write image page 0 of 4 (3660 image bytes) 1024 bytes: hidapi: unknown failure

Of course I can work can work around by not disconnecting :-)